The end of one thing a beginning of another.
This open skull on Death harkens to letting things go. Things that don't much matter. Stuff. Debris. Junk. Old mental files. I liken my mind some days as a old library card catalog system. Mentally I file things away and then I just have to flip through the card files to bring to mind that which I went on a seek and find for. Time to filter through this and that and get rid of that or this which no longer is useful. In a few days i am taking a gett-a-way so I can do some clutter clearing in the old noggin, and Death just reminds me that everyone and everything has an ending which can lead to a new beginning.
The Linestrider's Tarot - Siolo Thompson